-5-7(1+8z)=-30

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Solution for -5-7(1+8z)=-30 equation: 


Simplifying
-5 + -7(1 + 8z) = -30
-5 + (1 * -7 + 8z * -7) = -30
-5 + (-7 + -56z) = -30

Combine like terms: -5 + -7 = -12
-12 + -56z = -30

Solving
-12 + -56z = -30

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '12' to each side of the equation.
-12 + 12 + -56z = -30 + 12

Combine like terms: -12 + 12 = 0
0 + -56z = -30 + 12
-56z = -30 + 12

Combine like terms: -30 + 12 = -18
-56z = -18

Divide each side by '-56'.
z = 0.3214285714

Simplifying
z = 0.3214285714

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